1. Introduce
– Ni-based superalloy designed for turbine applications in advanced gas turbine engines
– A precipitation hardening cast superalloy with a γ’ phase and carbides precipitated in the γ base, resulting in excellent mechanical properties at high temperatures
– Can be used in a temperature range that is 16°C higher than the turbine blade alloy Rene 80
– UNS N12125
* Rene
– Age-hardening Ni-Cr alloy with high strength, high temperature and corrosion resistance
* γ’ precipitates : A₃B type (LI₂) intermetallic compounds
– A : Electronegative elements such as Ni, Co, and Cu
– B : Electronegative elements such as Al, Ti, etc.
– Mo, Ti, Cr : Increased γ’ strength
* UNS
- Abbreviation of Unified Numbering Systems for Metals and Alloys
- Unified numbering system for metals and alloys
- A representative number that is compatible with metals and alloys defined in many material-related codes such as ASTM, AISI, ASME, AWS, etc.
* N : Nickel and nickel alloys
2. Property
– High temperature strength, oxidation resistance, creep resistance, excellent thermal stability
| Element | Impact |
|---|---|
| Ni | Provides excellent strength and corrosion resistance |
| Cr | Provides corrosion resistance, oxidation resistance |
| Co | Provides strength, creep properties |
| Ti | Provides high temperature strength |
| Al | Provides high temperature strength, high temperature creep properties |
| Mo | Provides high temperature creep properties |
| W | Provides high temperature creep properties |
[Rene 125 Chemical Composition (%)]
| Ni | Cr | C | N |
|---|---|---|---|
| Min. 62.62 | Max. 9.00 | Max. 0.11 | Max. 1.40 |
| Ti | Mo | Co | W |
|---|---|---|---|
| Max. 2.50 | Max. 2.00 | Max. 10.00 | Max. 7.00 |
| Ta | Zr | B | Hf |
|---|---|---|---|
| Max. 3.80 | Max. 0.05 | Max. 0.02 | Max. 1.50 |
[Rene 125 Mechanical Properties]
| Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) |
|---|---|---|
| 1140 | 940 | 7 |
[Rene 125 Physical Properties]
| Density (g/㎤) | Melting Range (℃) |
|---|---|
| 8.59 | 1230 ~ 1240 |
3. Standard & Specification
– Specification : UNS N12125
4. Available Form
– Bar, Rod
– Sheet, Plate
– Coil, Wire
– Pipe
– Powder
5. Application & Product
– Aerospace
| Application | Product |
|---|---|
| Aerospace | Turbine Blades, Turbine Wheels, Combustion Chamber Liners, Springs, Fasteners, Turbine Casings |
(1) Turbine Blades / (2) Combustion Chamber Liners / (3) Fasteners / (4) Turbine Wheels
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